Re: [icu-design] ICU proposal: better alignment of time zone names ICU vs. CLDR

[<yos...@us...>]

icu...@li... wrote on 10/25/2006 07:53:46 PM:

> b) ICU has Asia/Riyadh87 and similar (3 zones with aliases) but CLDR
> does not. (tzdata files solar87..solar89)
> 
> These represent an abandoned experiment. In these zones, each day of
> 1987-1989 has its own rule, adjusting official time to astronomical
> time. Therefore, they have 365/366 transitions times each in ICU's
> zoneinfo.txt.
> 
> I propose to remove the Riyadh<yy> names from ICU.
> 

As you know, ICU uses Olson tz database data.  Although these zones seems 
not so important (because they are historic zones, not used currently), I 
can not see any strong reason to exclude them from ICU.  I think what we 
should do is - import Olson tz data first, then if there are zones which 
are only in CLDR, capture them in ICU, then ICU timezone is a super set of 
both Olson and CLDR.

-Yoshito Umaoka